http://book.klll.cc/ebooks/author/32951.opds2025-08-25T07:45:38ZBooks by Leith, C. K. (Charles Kenneth) (sorted by popularity)Free eBooks since 1971.Project Gutenberghttps://book.klll.ccwebmaster@gutenberg.orghttps://book.klll.cc/gutenberg/favicon.ico2512025-08-25T07:45:38Zhttps://book.klll.cc/ebooks/27842.opdsThe Economic Aspect of GeologyC. K. Leith